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Mayor Rahm Emanuel and aldermen had recently proposed taking down the "Honorary Trump Plaza" sign in the 400 block of North Wabash Avenue—but Chicago police say a member of Trump Hotel and Tower security told them it was stolen sometime between Oct. 10 and Oct. 11 at 3:30 p.m.

Emanuel, speaking Thursday outside Trump Tower with Illinois Democratic lawmakers as part of a “Get Out The Vote” initiative as Election Day encroaches, acknowledged the missing sign. At the time it had reportedly been taken down by the city’s Department of Transportation.

“I understand why they wanted to take that sign down,” Emanuel said Thursday. “It didn’t speak to the values of the city that he was expressing, but more importantly than a symbolic action—the best way to make sure it’s not a symbolic action, but a real action—is to make sure that you turn out the vote in your respective communities.”

Department of Transportation officials were not immediately available for comment.

Emanuel has said he supports Democratic presidential nominee Hillary Clinton, and has said that he thinks Trump is "wrong for America," criticizing the candidate’s proposal to use stop-and-frisk tactics to fight crime in Chicago.

Trump has also recently dismissed a slew of allegations of sexual assault, calling them a "coordinated and vicious attack" from the media and Clinton campaign.